Speaker



FIG. 1 is a perspective view of a speaker showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a side elevational view of one side thereof, the other side view being a mirror image.

The broken line showing of three buttons on the top, the feet on the bottom and the connectivity ports on the rear of the speaker is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a speaker, as shown and described. 